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<a href="obj00.html">作业一</a>
<a href="obj01.html">作业二</a>
<a href="obj02.html">作业三</a>
<a href="obj03.html">作业四</a>
<a href="obj04.html">作业五</a>
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        document.write('周末愉快！');
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        document.write('请输入位于1~7之间的数');
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